A205932 Number of (n+1)X6 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards

3048544, 1380479280, 490921163308, 148812223113936, 40748437316237404, 10397256424705262728, 2520284777347122442980, 587713888919277760959036, 132997535323270057864532536

Offset

1,1

Comments

Column 5 of A205935

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=4
..2..3..2..2..0..2....2..2..0..1..3..1....0..3..3..3..3..1....1..0..0..0..0..3
..1..1..0..3..2..1....3..1..0..3..0..3....3..3..1..1..1..3....1..2..2..2..1..0
..3..2..1..0..3..2....2..2..1..0..2..0....2..3..3..3..0..1....3..1..0..3..2..1
..1..0..3..1..0..3....0..3..2..1..3..2....0..2..1..0..3..0....0..2..1..0..3..2
..3..2..1..3..1..0....1..0..3..2..0..3....1..0..2..1..0..2....3..3..2..1..0..3

Crossrefs

Sequence in context: A268405 A187438 A184374 * A281447 A246249 A183696

Adjacent sequences: A205929 A205930 A205931 * A205933 A205934 A205935

Keyword

nonn

Author

R. H. Hardin Feb 01 2012

Status

approved